import fetch from 'dva/fetch';
import qs from 'qs';

const requestFetch = 'https://segmentfault.com/a/1190000011433064';

function parseJSON(response) {
    return response.json();
}

function checkStatus(response) {
    if (response.status >= 200 && response.status < 300) {
        return response;
    }

    const error = new Error(response.statusText);
    error.response = response;
    throw error;
}

/**
 * Requests a URL, returning a promise.
 *
 * @param  {string} url       The URL we want to request
 * @param  {object} [options] The options we want to pass to "fetch"
 * @return {object}           An object containing either "data" or "err"
 */
export default function request(url, params, options) {
    let newUrl = '';
    if(!!params){
        newUrl = url+'?'+qs.stringify(params)
    }
    return fetch(newUrl, options)
        .then(checkStatus)
        .then(parseJSON)
        .then(data => {
            console.log('data...',data)
            const {msg,code,success} = data;
            if(success){
                return {data:data.data};
            }else{
                return {error:{msg,code}}
            }
        })
        .catch(error => ({error}));
}
